CN201944208U - Reduction gear capable of changing transmission ratio - Google Patents
Reduction gear capable of changing transmission ratio Download PDFInfo
- Publication number
- CN201944208U CN201944208U CN2011200295387U CN201120029538U CN201944208U CN 201944208 U CN201944208 U CN 201944208U CN 2011200295387 U CN2011200295387 U CN 2011200295387U CN 201120029538 U CN201120029538 U CN 201120029538U CN 201944208 U CN201944208 U CN 201944208U
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- China
- Prior art keywords
- gear
- driving gear
- duplicate
- meshed
- speed reducer
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model discloses a reduction gear capable of changing a transmission ratio, which is internally provided with a speed shifting mechanism and comprises a brake shaft arranged in a chassis. A pair of duplicate gears are installed on the brake shaft by a bearing; the duplicate gear is provided with a main gear and a pinion; a third transmission gear is arranged between the pair of duplicate gears and on the brake shaft by a connection key, and is meshed with an inner gear; an annular slot is arranged on the outer wall of the inner gear and is provided with a shifting fork; and the shifting fork is connected with a joy stick which is connected on the chassis by a joy stick seat. When the joy stick is arranged in the middle, the inner gear is only meshed with the third transmission gear; when the joy stick is arranged downwards, the inner gear is meshed with the third transmission gear and the pinion in the duplicate gear respectively; and when the joy stick is arranged upwards, the inner gear is meshed with the third transmission gear and the pinion in the other duplicate gear respectively. The reduction gear is capable of changing the transmission ratio, and is characterized in that the structure is simple, and the transmission efficiency is high.
Description
Technical field
The utility model relates to a kind of deceleration machinery, is specifically related to a kind of speed reducer that changes velocity ratio.
Background technique
The velocity ratio of existing most of speed reducers is changeless, but needs often to adjust the output speed of speed reducer in the occasion of many application speed reducers.Also there is the output speed can electrodeless variable-speed or the speed reducer of step change in the existing speed reducer, this class speed governing speed reducer mainly is the adjusting that realizes velocity ratio by the displacement of conical surface drive wheel and belt wheel, thereby or by the velocity ratio that changes speed reducer that moves between the driving gear of a plurality of different numbers of teeth.The structure more complicated of above-mentioned speed governing speed reducer, volume is bigger, and the manufacturing cost of product is higher, and transmission efficiency is lower simultaneously.Therefore, be necessary the structure of existing speed governing speed reducer is improved.
The model utility content
The purpose of this utility model is to overcome the defective that exists in the prior art, designs a kind of speed reducer that changes velocity ratio, and this speed reducer both can change velocity ratio, have again simple in structure, the characteristics that transmission efficiency is high.
For achieving the above object, the technical solution of the utility model is a kind of speed reducer that changes velocity ratio of design, it is characterized in that, in described speed reducer, be provided with gear, described gear comprises and is arranged on the brake axle of establishing in the cabinet, on described brake axle, have first by Bearing Installation, second duplicate gear, described duplicate gear is made of a gearwheel and a small gear, with described first, two small gears in second duplicate gear are installed relatively, described first, by connecting key the 3rd driving gear is installed on described brake axle between second duplicate gear, described the 3rd driving gear is meshed with an internal gear, on the outer wall of described internal gear, be provided with circular groove, shift fork is housed on circular groove, described shift fork is connected with operating handle, described operating handle is connected on the cabinet by operating rod bearing, described internal gear only was meshed with the 3rd driving gear when described operating handle was provided with between two parties, described internal gear was meshed with small gear in the 3rd driving gear and first duplicate gear respectively when described operating handle was provided with downwards, and described internal gear was meshed with small gear in the 3rd driving gear and second duplicate gear respectively when described operating handle upwards was provided with.
Wherein, optimized technical scheme is also to be provided with power input shaft, pto and transmission shaft in described cabinet, the axis of described brake axle, power input shaft, pto and transmission shaft is positioned at same plane, and described power input shaft is vertical mutually with the axis of transmission shaft, and the axis of described brake axle, transmission shaft and pto is parallel to each other.
Optimized technical scheme also comprises, at an end of described power input shaft and a side of transmission shaft intermeshing a pair of umbrella gear is housed respectively, the 4th different driving gear of the number of teeth and the 5th driving gear also are housed respectively on described transmission shaft, described the 4th driving gear is meshed with gearwheel in first duplicate gear, and described the 5th driving gear is meshed with gearwheel in second duplicate gear.
Optimized technical scheme also comprises, the 6th driving gear also is housed on described brake axle, and described the 6th driving gear is meshed with the 7th driving gear on being installed in pto.
Optimized technical scheme comprises that also described pto is a hollow shaft, is provided with keyway on the inwall of hollow shaft.
Optimized technical scheme comprises that also an end of described power input shaft and brake axle stretches out described cabinet, is provided with keyway on described external part.
Optimized technical scheme comprises that also described brake axle, power input shaft, pto and transmission shaft are contained in the described cabinet by bearing.
Optimized technical scheme comprises that also described first, second duplicate gear, internal gear, the 3rd driving gear, the 4th driving gear, the 5th driving gear, the 6th driving gear, the 7th driving gear are helical gear.
Optimized technical scheme comprises that also described shift fork is horizontally installed in the cabinet, and described operating handle vertically is provided with, and an end of described operating handle is plugged in the attachment hole of described shift fork one end, and the other end reaches the upper end of cabinet by operating rod bearing.
Advantage of the present utility model and beneficial effect are: this speed reducer is because the use of mobile internal gear, drive the change of internal gear position (upper, middle and lower) by operating handle and shift fork, both can regulate the rotating speed of pto, making it have high speed, low speed and speed is zero output, has compact structure again, the characteristics that transmission efficiency is high.Because pto adopts the structure of hollow shaft, the volume of speed reducer is reduced again, weight saving, two its intensity truly have increase.
Description of drawings
Fig. 1 is that the master of the utility model speed reducer looks schematic representation;
Fig. 2 is one of A-A cross-sectional schematic of Fig. 1;
Fig. 3 be Fig. 1 the A-A cross-sectional schematic two;
Fig. 4 be Fig. 1 the A-A cross-sectional schematic three.
Among the figure: 1, cabinet; 2, brake axle; 3, bearing; 4, first duplicate gear; 4-1, gearwheel; 4-2, small gear; 5, second duplicate gear; 5-1, gearwheel; 5-2, small gear; 6, Lian Jian; 7, the 3rd driving gear; 8, internal gear; 9, circular groove; 10, shift fork; 11, operating handle; 12, operating rod bearing; 13, power input shaft; 14, pto; 15, transmission shaft; 16,17, umbrella gear; 18, the 4th driving gear; 19, the 5th driving gear; 20, the 6th driving gear; 21, the 7th driving gear.
Embodiment
Below in conjunction with drawings and Examples, embodiment of the present utility model is further described.Following examples only are used for the technical solution of the utility model more clearly is described, and can not limit protection domain of the present utility model with this.
Shown in Fig. 1 to 4, the utility model is a kind of speed reducer that changes velocity ratio, in speed reducer, be provided with a cover gear, described gear comprises being arranged on establishes the brake axle 2 that is used to brake in the cabinet 1, on described brake axle 2, first duplicate gear 4 is installed by bearing 3, second duplicate gear 5, described duplicate gear is by a gearwheel 4-1,5-1 and a small gear 4-2,5-2 constitutes, with described first duplicate gear 4, two small gear 4-2 in second duplicate gear 5,5-2 is installed in the middle part of brake axle 2 relatively, because at duplicate gear 4,5 and brake axle 2 between bearing is housed, so duplicate gear 4,5 can rotate with respect to brake axle 2; At described first duplicate gear 4, by connecting key 6 the 3rd driving gear 7 is installed on described brake axle 2 between second duplicate gear 5, described the 3rd driving gear 7 is meshed with an internal gear 8, both internal gear 8 was sleeved on the outside of the 3rd driving gear 7, on the outer wall of described internal gear 8, be provided with circular groove 9, shift fork 10 is housed on circular groove 9, described shift fork 10 is connected with operating handle 11, described operating handle 11 is connected on the cabinet 1 by operating rod bearing 12,8 of described internal gears are meshed with the 3rd driving gear 7 when described operating handle 11 is positioned at the middle position on cabinet, even this moment, power input shaft 13 rotated with transmission shaft 15, brake axle 2 can not rotate yet, when described operating handle 11 is positioned at downward position on cabinet, at this moment described internal gear 8 will be respectively be meshed with small gear 4-2 in the 3rd driving gear 7 and first duplicate gear 4, when described operating handle 11 is positioned at upwards position on cabinet, at this moment described internal gear 8 will be respectively be meshed with small gear 5-2 in the 3rd driving gear 7 and second duplicate gear 5.
In cabinet described in the utility model 1, also be provided with power input shaft 13, pto 14 and transmission shaft 15, the axis of described brake axle 2, power input shaft 13, pto 14 and transmission shaft 15 is positioned at same plane, and described power input shaft 13 is vertical mutually with the axis of transmission shaft 15, and the axis of described brake axle 2, transmission shaft 15 and pto 14 is parallel to each other.At an end of 13 of described power inputs and a side of transmission shaft 15 intermeshing a pair of umbrella gear 16,17 is housed respectively, the 4th different driving gear 18 of the number of teeth and the 5th driving gear 19 also are housed respectively on described transmission shaft 15, described the 4th driving gear 18 is meshed with gearwheel 4-1 in first duplicate gear 4, and described the 5th driving gear 19 is meshed with gearwheel 5-1 in second duplicate gear 5.The 6th driving gear 20 also is housed on the brake axle 2 in described cabinet 1, and described the 6th driving gear 20 is meshed with the 7th driving gear 21 on being installed in pto 14.
At the pto described in the utility model 14 is hollow shaft, is provided with keyway on the inwall of hollow shaft; This hollow shaft is used for the power input shaft of erection load machine.
End at power input shaft described in the utility model 13 and brake axle 2 stretches out described cabinet 1 respectively, is respectively applied for to be connected with motor with driving and to be connected with braking device.On described external part, be provided with keyway at described power input shaft 13 and brake axle 2.Wherein said brake axle 2, power input shaft 13, pto 14 and transmission shaft 15 are contained in the described cabinet 1 by bearing respectively.
All can be helical gear at first duplicate gear 4 described in the utility model, second duplicate gear 5, internal gear 8, the 3rd driving gear 7, the 4th driving gear 18, the 5th driving gear 19, the 6th driving gear 20, the 7th driving gear 21.
In the utility model, described shift fork 10 can be horizontally installed in the cabinet 1, described operating handle 11 vertically can be provided with, one end of described operating handle 11 is plugged in the attachment hole of described shift fork 10 1 ends, and the other end reaches the upper end of cabinet 1 by operating rod bearing 12.
The working principle that changes the speed reducer of velocity ratio described in the utility model is, as shown in Figure 2, when rotating under the driving of power input shaft 13 at motor, power input shaft 13 drives transmission shaft 15 by a pair of umbrella gear and rotates, the 4th driving gear 18 and the 5th driving gear 19 that are installed on the transmission shaft 15 also rotate together, since the 4th driving gear 18 and the 5th driving gear 19 respectively with first duplicate gear 4 that is installed on the brake axle 2 in gearwheel 4-1, be meshed with the gearwheel 5-1 in second duplicate gear 5, therefore, the 4th driving gear 18 and the 5th driving gear 19 can drive first duplicate gear 4 respectively and second duplicate gear 5 rotates, because first duplicate gear 4 and second duplicate gear 5 are installed on the brake axle 2 by bearing 3, so brake axle 2 did not rotate when first duplicate gear 4 and second duplicate gear 5 rotated, yet between first duplicate gear 4 and second duplicate gear 5, also the 3rd driving gear 7 is housed by connecting key 6, the internal gear 8 that is meshed with it is housed in the outside of the 3rd driving gear 7, this internal gear 8 can slide up and down, be provided with circular groove 9 in the outside of internal gear 8, shift fork 10 is housed in this circular groove, this shift fork 10 is U-shaped connecting rods of laterally installing, and this connecting rod is connected with an operating handle 11 that vertically is connected on the cabinet 1.As shown in Figure 2,8 of internal gears are meshed with the 3rd driving gear 7 when described operating handle 11 is positioned at the middle position on cabinet, even this moment, power input shaft 13 rotated with transmission shaft 15, brake axle 2 can not rotate yet.As shown in Figure 3, when operating handle 11 is positioned at downward position on cabinet, at this moment internal gear 8 upwards slides, this internal gear 8 will be respectively be meshed with small gear 4-2 in the 3rd driving gear 7 and first duplicate gear 4, the 4th driving gear 18 on the transmission shaft 15 and the engagement of the gearwheel 4-1 in first duplicate gear 4 at this moment, small gear 4-2 in first duplicate gear 4 and internal gear 8 engagements, internal gear 8 also meshes with the 3rd driving gear 7 simultaneously, at this moment rotates together if 18 rotations of the 4th driving gear just can drive brake axle 2.As shown in Figure 4, when described operating handle 11 is positioned at upwards position on cabinet, at this moment described internal gear 8 will be respectively be meshed with small gear 5-2 in the 3rd driving gear 7 and second duplicate gear 5, the 5th driving gear 19 on the transmission shaft 15 and the engagement of the gearwheel 5-1 in second duplicate gear 5 at this moment, small gear 5-2 in second duplicate gear 5 and internal gear 8 engagements, internal gear 8 also meshes with the 3rd driving gear 7 simultaneously, at this moment rotates together if 19 rotations of the 5th driving gear just can drive brake axle 2.Owing to the 6th driving gear 20, the six driving gears 20 and the 7th driving gear 21 engagements that are installed on the pto 14 also are housed on brake axle, rotate if brake axle 2 rotations can drive pto 14.
The above only is a preferred implementation of the present utility model; should be understood that; for those skilled in the art; under the prerequisite that does not break away from the utility model know-why; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (9)
1. speed reducer that can change velocity ratio, it is characterized in that, in described speed reducer, be provided with gear, described gear comprises and is arranged on the brake axle of establishing in the cabinet, on described brake axle, have first by Bearing Installation, second duplicate gear, described duplicate gear is made of a gearwheel and a small gear, with described first, two small gears in second duplicate gear are installed relatively, described first, by connecting key the 3rd driving gear is installed on described brake axle between second duplicate gear, described the 3rd driving gear is meshed with an internal gear, on the outer wall of described internal gear, be provided with circular groove, shift fork is housed on circular groove, described shift fork is connected with operating handle, and described operating handle is connected on the cabinet by operating rod bearing; Described internal gear only was meshed with the 3rd driving gear when described operating handle was provided with between two parties, described internal gear was meshed with small gear in the 3rd driving gear and first duplicate gear respectively when described operating handle was provided with downwards, and described internal gear was meshed with small gear in the 3rd driving gear and second duplicate gear respectively when described operating handle upwards was provided with.
2. the speed reducer that changes velocity ratio as claimed in claim 1, it is characterized in that, in described cabinet, also be provided with power input shaft, pto and transmission shaft, the axis of described brake axle, power input shaft, pto and transmission shaft is positioned at same plane, and described power input shaft is vertical mutually with the axis of transmission shaft, and the axis of described brake axle, transmission shaft and pto is parallel to each other.
3. the speed reducer that changes velocity ratio as claimed in claim 2, it is characterized in that, at an end of described power input shaft and a side of transmission shaft intermeshing a pair of umbrella gear is housed respectively, the 4th different driving gear of the number of teeth and the 5th driving gear also are housed respectively on described transmission shaft, described the 4th driving gear is meshed with gearwheel in first duplicate gear, and described the 5th driving gear is meshed with gearwheel in second duplicate gear.
4. the speed reducer that changes velocity ratio as claimed in claim 3 is characterized in that, the 6th driving gear also is housed on described brake axle, and described the 6th driving gear is meshed with the 7th driving gear on being installed in pto.
5. the speed reducer that changes velocity ratio as claimed in claim 4 is characterized in that, described pto is a hollow shaft, is provided with keyway on the inwall of hollow shaft.
6. the speed reducer that changes velocity ratio as claimed in claim 5 is characterized in that, an end of described power input shaft and brake axle stretches out described cabinet, is provided with keyway on described external part.
7. the speed reducer that changes velocity ratio as claimed in claim 2 is characterized in that described brake axle, power input shaft, pto and transmission shaft are contained in the described cabinet by bearing.
8. the speed reducer that changes velocity ratio as claimed in claim 3, it is characterized in that described first, second duplicate gear, internal gear, the 3rd driving gear, the 4th driving gear, the 5th driving gear, the 6th driving gear, the 7th driving gear are helical gear.
9. the speed reducer that changes velocity ratio as claimed in claim 1, it is characterized in that described shift fork is horizontally installed in the cabinet, described operating handle vertically is provided with, one end of described operating handle is plugged in the attachment hole of described shift fork one end, and the other end reaches the upper end of cabinet by operating rod bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200295387U CN201944208U (en) | 2011-01-28 | 2011-01-28 | Reduction gear capable of changing transmission ratio |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200295387U CN201944208U (en) | 2011-01-28 | 2011-01-28 | Reduction gear capable of changing transmission ratio |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201944208U true CN201944208U (en) | 2011-08-24 |
Family
ID=44471551
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200295387U Expired - Lifetime CN201944208U (en) | 2011-01-28 | 2011-01-28 | Reduction gear capable of changing transmission ratio |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201944208U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102072289A (en) * | 2011-01-28 | 2011-05-25 | 江阴克威齿轮箱制造有限公司 | Reducer with changeable transmission ratio |
| CN109869445A (en) * | 2019-02-27 | 2019-06-11 | 江苏泰隆减速机股份有限公司 | A kind of commutation variable speed reducer |
-
2011
- 2011-01-28 CN CN2011200295387U patent/CN201944208U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102072289A (en) * | 2011-01-28 | 2011-05-25 | 江阴克威齿轮箱制造有限公司 | Reducer with changeable transmission ratio |
| CN102072289B (en) * | 2011-01-28 | 2013-10-23 | 江阴克威齿轮箱制造有限公司 | Reducer with changeable transmission ratio |
| CN109869445A (en) * | 2019-02-27 | 2019-06-11 | 江苏泰隆减速机股份有限公司 | A kind of commutation variable speed reducer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110824 Effective date of abandoning: 20131023 |
|
| RGAV | Abandon patent right to avoid regrant |